On Wed, May 7, 2008 at 9:22 AM, Joakim Tjernlund <joakim.tjernlund@xxxxxxxxxxxx> wrote: > Got a bridge with 4 optical VLAN interfaces, eth1.1, eth1.2, eth1.3 and > eth1.4, attached and the builtin STP enabled. eth1 is connected to > a "switch" with 4 real interfaces, each real interface maps to one of > the above mentioned VLANs. > > If I loop two or more interfaces by connecting each interface's output > to its own input, I get a loop that STP doesn't detect. > Looping by connecting an output from one interface to another interface > input works fine. > > Bug or limitation in STP? If limitation, would RSTP help here? Limitation in STP. If a bridge receives one of its own STP packets on the same interface from which it was sent, that indicates a loop elsewhere in the network that disabling an interface locally will not fix, therefore STP takes no action. > > Kernel 2.6.25 > > Jocke > _______________________________________________ > Bridge mailing list > Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx > https://lists.linux-foundation.org/mailman/listinfo/bridge > _______________________________________________ Bridge mailing list Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/bridge
